52550420 has 48 divisors (see below), whose sum is σ = 119387520. Its totient is φ = 19314816.

The previous prime is 52550419. The next prime is 52550431. The reversal of 52550420 is 2405525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93059 + ... + 93621.

It is an arithmetic number, because the mean of its divisors is an integer number (2487240).

Almost surely, 2^52550420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52550420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59693760).

52550420 is an abundant number, since it is smaller than the sum of its proper divisors (66837100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52550420 is a wasteful number, since it uses less digits than its factorization.

52550420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 52550420 is about 7249.1668486799. The cubic root of 52550420 is about 374.5634505145.

Adding to 52550420 its reverse (2405525), we get a palindrome (54955945).

The spelling of 52550420 in words is "fifty-two million, five hundred fifty thousand, four hundred twenty".